, if the traditional orthodontic miniscrew operation, patients in surgery after fixed in osteoporotic alveolar bone strength is insufficient resulting in bone nail loose, shift to achieve the requirements of the anchoring effect, thereby affecting the effectiveness of corrective orthodontics, although adding bonemeal additions of alveolar bone bone holding power for, but due to the traditional bone nail operation must be in the drilling of pre drilled to guide bone nail locking, so regarding the alveolar bone itself inadequate structure strength in osteoporotic patients, and the locking ability also greatly reduced as shown in Figure 1 [2], for conventional orthodontic miniscrew operation
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